{"title":"A digitally controlled PA with tunable matching network","authors":"Fei Jia, Dong Huang, Shengxi Diao, Z. Fu, F. Lin","doi":"10.1109/RFIT.2012.6401674","DOIUrl":null,"url":null,"abstract":"A class AB power amplifier (PA) with output power digital controllability for WSNs is implemented in 65nm CMOS technology. The programmable output power is realized by altering the number of working cells and adjusting the load through a tunable matching network, which can increase the back-off efficiency significantly. Dummy FETs are used for neutralization to increase reverse isolation. The measurement results show a peak output power of 3dBm and a PAE of 40% with a 1.2V supply. Drain efficiency at back off (above 3dB) increases by more than 10%, comparing to traditional digital controlled PA.","PeriodicalId":187550,"journal":{"name":"2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"188 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIT.2012.6401674","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
A class AB power amplifier (PA) with output power digital controllability for WSNs is implemented in 65nm CMOS technology. The programmable output power is realized by altering the number of working cells and adjusting the load through a tunable matching network, which can increase the back-off efficiency significantly. Dummy FETs are used for neutralization to increase reverse isolation. The measurement results show a peak output power of 3dBm and a PAE of 40% with a 1.2V supply. Drain efficiency at back off (above 3dB) increases by more than 10%, comparing to traditional digital controlled PA.
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